nullblk

Null block device driver

Always read the modinfo help

• documentation: https://docs.kernel.org/block/null_blk.html
• code: https://github.com/torvalds/linux/tree/v6.8/drivers/block/null_blk (it has its own folder now, from being a single file)

Working example command

sudo modprobe null_blk queue_mode=2 gb=32 bs=4096 nr_devices=1 irqmode=2 hw_queue_depth=512 use_per_node_hctx=0 completion_nsec=10000 memory_backed=1

https://github.com/animeshtrivedi/notes/wiki/linux-development#tmpfs-and-null-block-device-options